docs: def any(pred: Callable, xs: Iterable):
      """
      Check if at least one element of the iterable `xs`
      fullfills predicate `pred`.
  
      :param pred:
         predicate function.
      :param xs:
         iterable object.
      :returns: boolean
      """
      b = find_first(pred, xs)
  
      return True if b is not None else False